Furnace



(No Model.)

M. S. FOOTE.

FURNACE.

Patented Oct. 4,1881? Fig-Z.

I at, W o-:51

UNITED STATES PATENT ()FFICE.

MARK S. FOOTE, OF BURLINGTON, IOWA.

FURNACE.

SPECIFICATION forming part of Letters Patent No. 247,752, dated October 4, 1881.

Application filed July 12, 1881.

To all whom it may concern:

v being bad to the accompanying drawings,

which form a part of this specification.

My invention relates especially to the combinations of appliances referred to in the specification and more particularly pointed out in the claim.

In the drawings, Figure 1 is a cross-section of my device, showing one of the grates dumped. Fig. 2 is a plan view of the grate. Fig.3 is a view showingthemethod of dumping the grates separately from the same side. Fig. 4 is a cross-section of the furnace and boiler, showing a longitudinal section of the watercollar.

The object of my invention is to provide a boiler-furnace in which the heat will be evenly distributed under the boiler and the smoke utilized as fuel.

A is a boiler. B are the side walls which support the boiler. C is the bridge-wall. D is a water-collar depending from the boiler, and connected therewith by short pipes or nipples d. E is the grate,of which EE are the dumping grates. E E are thelevers used for dumping the grates.

The boiler A may be of any desirable mak this not being an essential feature of my invention, my object being to provide a furnace which may be easily applied and used efficiently with any description of boiler.

It will be seen that in the arrangement of my grates they have a tendency to throw the refuse fuel toward the rear. This gives a greater heat at that portion of'theboilerwhich is toward the front, and by this arrangement the flame will strike the bottom of the boiler at the forward portion, and by reason of the draft traverse the whole of the boiler, whereas in the old system the greatest heat is in the center of the furnace, leaving the fore part of the boiler to be heated by the back-draft.

At or near the back portion of the furnace I locate a depending water-collar, D, which is made hollow, and depends from the bottom of the boiler, and is attached thereto by nipples d,made of piping. This will allow of the water circulating through the collar, and will form,

(No model.)

as it were, a heater. This collar is also intended to act as a stop or butt for the smoke,which, in its journey through the furnace, butts against the collar D and takes a downward course onto the top of the tire again, and is there burned, and then shoots under the collar D and continues its flight over the middle bridge-wall and along the bottom of the boiler, the shape of the back bridge, 0, being such that it holds the flame close up against the bottom of the boiler.

The collar Displaced at a suitable distance from the bottom of the boiler, so as to give a slight circulation to prevent the bottom of the boiler burning.

The inclination of the grates obviates any interference by the collar D with a proper fuelspace, and the dumping sections E E are, preferably, directly under said collar D, and pivoted upon levers E E in such a way that they may be dumped independently of one another, so that there may always. be kept clear a sutficiently uniform space for draft under the collar, and also be dumped from one side, so that should more than one boiler be employed, there would be no necessity of leaving a space between them for the purpose of working the levers.

It will be seen that the lever-stems c 6 work one inside the other, thus having the grates E E pivoted at the same point.

This grate is especially adapted for burning coal which needs agreat draft-such as screenings-as the smoke which accumulates will be burned and made into a hot flame by the action caused by the collar D.

I no not wish to confine myself to any number of collars or bridges, as in some cases one collar and bridge would be enough but, if necessary, more may be placed along the bottom of the boiler.

What I claim is- In a boiler-furnace, the combination, with the downwardly-projecting water-collar D, in communication with the boiler and the bridgewall 0, of the inclined main grate E and the dumping grate-sections, arranged to dump the cinders forward under the main grate, substantially as described.

In testimony whereof I sign this specification in the presence of two witnesses.

MARK S. FOOTE.

Witnesses:

GRAHAM M. Eoorn, H. J. HUNGERFORD. 

